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Orbital Angular Momentum Exchange in the Interaction of Twisted Light with Molecules

Babiker, M., Bennett, C.R., Andrews, D.L. and Dávila Romero, L.C. (2002) Orbital Angular Momentum Exchange in the Interaction of Twisted Light with Molecules. Physical Review Letters, 89 (14). pp. 143601-1. ISSN 1079-7114

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Abstract

In the interaction of molecules with light endowed with orbital angular momentum, an exchange of orbital angular momentum in an electric dipole transition occurs only between the light and the center of mass motion; i.e., internal “electronic-type” motion does not participate in any exchange of orbital angular momentum in a dipole transition. A quadrupole transition is the lowest electric multipolar process in which an exchange of orbital angular momentum can occur between the light, the internal motion, and the center of mass motion. This rules out experiments seeking to observe exchange of orbital angular momentum between light beams and the internal motion in electric dipole transitions.

Item Type: Article
Academic Units: The University of York > Physics (York)
Depositing User: York RAE Import
Date Deposited: 23 Feb 2009 10:10
Last Modified: 23 Feb 2009 10:10
Published Version: http://dx.doi.org/10.1103/PhysRevLett.89.143601
Status: Published
Publisher: The American Physical Society.
Identification Number: 10.1103/PhysRevLett.89.143601
URI: http://eprints.whiterose.ac.uk/id/eprint/7262

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